Abstract
The present study sought to investigate both perceptually and instrumentally the prosodic and respiratory abilities of two persons with Parkinson's disease, to determine firstly, whether the results of acoustic and perceptual analyses of prosody concur, and secondly, whether perceptual ratings of disordered respiration reflect a physiological impairment in the breathing apparatus. The results indicate that perceptual judgments alone fail to provide sufficiently sensitive information to enable clinicians to identify the underlying pathophysiological nature of the respiratory impairment in an individual with Parkinson's disease. Further, perceptual and acoustic measures of prosodic impairment in the subjects with Parkinson's disease frequently failed to agree. The need for careful instrumental measures in the optimum management of persons with Parkinson's disease is emphasized.
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